会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Fiber-optic rotation sensor
    • 光纤旋转传感器
    • US5239362A
    • 1993-08-24
    • US454224
    • 1989-12-21
    • Hiroshi Kajioka
    • Hiroshi Kajioka
    • G01C19/72
    • G01C19/72
    • The fiber-optic rotation sensor comprises a sensing loop using an optical fiber which essentially performs a single polarization when bent, both end portions of the sensing loop being disposed with the principal axes of polarization thereof orthogonal to each other and the end portions being joined by an evanescent wave coupling to form a ring interferometer, a device for introducing to an input end of the interferometer a linearly polarized light at a bearing of 45.degree. relative to the principal axis of polarization of the interferometer, and a retardation measuring system provided at an output end of the interferometer for picking up an electrical output proportional to a rotational angular velocity applied to the interferometer. When the linearly-polarized light is introduced to the input end of the coupling portion of the ring interferometer at a bearing of 45.degree. with respect to the principal axis of polarization of the interferometer, the light is branched into two polarized light beams running through the sensing loop, one clockwise and the other counterclockwise. The polarized light beams are recombined with each other to be input to the retardation measuring system from which an electrical output proportional to the rotational angular velocity applied to the interferometer is picked up.
    • 光纤旋转传感器包括使用光纤的感测回路,当弯曲时基本上执行单个偏振,感测回路的两个端部被设置成其主要极化轴彼此正交,并且端部通过 衰减波耦合以形成环形干涉仪,用于将干涉仪的输入端引入相对于干涉仪的主偏振轴的45°轴线处的线偏振光的装置,以及设置在该干涉仪的延迟测量系统 用于拾取与施加到干涉仪的旋转角速度成比例的电输出的干涉仪的输出端。 当线偏振光以相对于干涉仪的主偏振轴为45°的轴承被引入到环形干涉仪的耦合部分的输入端时,该光被分支成穿过该干涉仪的两个偏振光束 感测回路,顺时针方向和逆时针方向。 偏振光束彼此重新组合以输入到延迟测量系统,从该延迟测量系统拾取与施加到干涉仪的旋转角速度成比例的电输出。
    • 10. 发明授权
    • Single-polarization fiber optics magnetic sensor
    • 单偏振光纤传感器
    • US4584470A
    • 1986-04-22
    • US558941
    • 1983-12-07
    • Hisao IizukaHiroshi Kajioka
    • Hisao IizukaHiroshi Kajioka
    • G01R33/032G01B11/00
    • G01R33/0322
    • In a single-polarization fiber optics magnetic sensor comprising a light source, a Faraday rotation element, a photodetector, and optical waveguide means for optically coupling them; according to a first embodiment, the optical waveguide means comprises upstream and downstream polarization-maintaining optical fibers coupled to the entrance and exit of the Faraday rotation element without a polarizer or an analyzer interposed therebetween; according to a second embodiment, in addition thereto, the axis of polarization of the downstream polarization-maintaining optical fiber is at an angle of about 45 degrees with respect to the orientation of the linearly polarized light exiting from the Faraday rotation element at a magnetic field intensity H equal to 0; and according to a third embodiment, in addition thereto, a polarization beam splitter is located in alignment with the orientation of polarization of the exit light from the downstream polarization-maintaining optical fiber, and two polarized light beams produced by said beam splitter are received by two photo-detectors for subsequent signal computation.
    • 在包括光源,法拉第旋转元件,光电检测器和用于光学耦合它们的光波导装置的单偏振光纤磁传感器中; 根据第一实施例,光波导装置包括耦合到法拉第旋转元件的入口和出口的上游和下游偏振保持光纤,而不夹有偏振器或分析器; 根据第二实施例,除此之外,下游偏振波保持光纤的偏振轴相对于从法拉第旋转元件在磁场出射的线偏振光的取向为大约45度的角度 强度H等于0; 并且根据第三实施例,除此之外,偏振分束器与来自下游偏振保持光纤的出射光的偏振取向对准,并且由所述分束器产生的两个偏振光束被 两个光电检测器用于后续信号计算。